|Mark 14:18 And as they sat and did eat, Jesus said, Verily I say unto you, One of you which eateth with me shall betray me.||Matt 26:21 And as they did eat, he said, Verily I say unto you, that one of you shall betray me.||Luke 22:21  But, behold, the hand of him that betrayeth me is with me on the table.||John 13:21 When Jesus had thus said, he was troubled in spirit, and testified, and said, Verily, verily, I say unto you, that one of you shall betray me.|
|Mark 14:19 And they began to be sorrowful, and to say unto him one by one, Is it I? and another said, Is it I?||Matt 26:22 And they were exceeding sorrowful, and began every one of them to say unto him, Lord, is it I?||Luke 22:23 And they began to inquire among themselves, which of them it was that should do this thing.||John 13:22 Then the disciples looked one on another, doubting of whom he spake. 23 Now there was leaning on Jesus' bosom one of his disciples, whom Jesus loved. 24 Simon Peter therefore beckoned to him, that he should ask who it should be of whom he spake. 25 He then lying on Jesus' breast saith unto him, Lord, who is it?|
|Mark 14:20 And he answered and said unto them, It is one of the twelve, that dippeth with me in the dish.||Matt 26:23 And he answered and said, He that dippeth his hand with me in the dish, the same shall betray me.||John 13:26a Jesus answered, He it is, to whom I shall give a sop, when I have dipped it.|
|Mark 14:21 The Son of man indeed goeth, as it is written of him: but woe to that man by whom the Son of man is betrayed! good were it for that man if he had never been born.||Matt 26:24 The Son of man goeth as it is written of him: but woe unto that man by whom the Son of man is betrayed! it had been good for that man if he had not been born.||Luke 22:22 And truly the Son of man goeth, as it was determined: but woe unto that man by whom he is betrayed!|
|Matt 26:25 Then Judas, which betrayed him, answered and said, Master, is it I? He said unto him, Thou hast said.||John 13:26b And when he had dipped the sop, he gave it to Judas Iscariot, the son of Simon. 27a And after the sop Satan entered into him. |
John 13:27b Then said Jesus unto him, That thou doest, do quickly.
John 13:28 Now no man at the table knew for what intent he spake this unto him. 29 For some of them thought, because Judas had the bag, that Jesus had said unto him, Buy those things that we have need of against the feast; or, that he should give something to the poor. 30 He then having received the sop went immediately out: and it was night.
Luke places the betrayal after the meal.
Luke has Satan enter into Judas much earlier in Luke 22:3. John 13:1 mentions Satan entering into Judas but does not say precisely when it happened.